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SeaSoar data are available in two formats:

"1Hz data" or "gridded".

Each of these is described below.

1Hz Data

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The *.dat2c files give final 1Hz SeaSoar CTD data.

Here is the first line of inshore.line1.dat2c:

44.64954 -125.25666 108.7 8.6551 33.5239 26.0164 8.6439 26.0181 155.64019

000603152152 0001 0.069 0.288 0.476 0.23

The format of the *.dat2c files is given by:

col 1: latitude (decimal degrees)

col 2: longitude (decimal degrees)

col 3: pressure (dbars)

col 4: temperature (C)

col 5: salinity (psu)

col 6: Sigma-t (kg/cubic meter)

col 7: potential temperature (C)

col 8: sigma-theta (kg/cubic meter)

col 9: time (decimal year-day of 2000)

col 10: date and time (integer year, month, day, hour, minute, second)

col 11: flag

col 12: PAR (volts)

col 13: FPK010 FL (violet filter) (volts)

col 14: FPK016 FL (green filter) (volts)

col 15: chlorophyl-a (micro g/liter)

The ones place of the flags variable indicates which of the

two sensor pairs was selected as the preferred sensor, giving

the values for T, S, and sigma-t:

0 indicates use of sensor pair 1 (T1, C1)

1 indicates use of sensor pair 2 (T2, C2)

Voltage values (columns 12 - 14) are in the range of 0-5 volts.

A value of 9.999 indicates "no value" for those columns

Chlorophyll was calculated based on the voltage values of

the green filtered FPK016; if that FPAK was 9-filled, then the

chlorophyll value was set at 999.99; if the calibrated value

was negative (due to noise in the calibration) the chlorophyll

value was set at 0.00; otherwise the calibration equation

used was:

chl_a = 7.6727(volts) - 3.4208

Gridded Data

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The *1.25km files give the final SeaSoar CTD data gridded

at a spacing of 1.25 km in the horizontal, and 2 db in the

vertical. In general this was used for the mapping surveys

that were on the continental shelf.

The *2.5km files give the final SeaSoar CTD data gridded at

a spacing of 2.5 km in the horizontal (and 2 db in the

vertical). These were used for the deeper, offshore survey.

Here is the first line of inshore.line1.1.25km:

6.25 155.92008 44.651726 -124.13853 1.0 9 9.5228777

33.127800 25.569221 240.63866 9.5227690

0.24063867E-01 3.7872221 1.1320001 0.78988892

The format of the *km files is given by:

col 1 = distance (km)

col 2 = julian day + fractional day (noon, Jan 1 = 1.5)

col 3 = latitude (decimal degrees)

col 4 = longitude (decimal degress)

col 5 = pressure (dbar)

col 6 = count

col 7 = temperature (degrees C)

col 8 = salinity (psu)

col 9 = density (sigma-t) (kg/cubic meter)

col 10 = specific vol anomaly (1.0E-8 cubic meter/kg)

col 11 = potential temperature (degrees C)

col 12 = dynamic height (dynamic meters)

col 13 = PAR (volts)

col 14 = FPK010 (volts) (violet filter)

col 15 = FPK016 (volts) (green filter)

"missing data" was set at 1.0e35

columns 1 - 4 give the average location and time of the

values contained in the column at that location. The

column gives values for every two dbars of depth, starting at

1db and extending down to a value at 121 db. The column

then shifts to the next location, 1.25km further along the

line. If we are working with the 2.5km sections, then the column

goes down to a value of 329 db, and the next column then shifts

2.5km further along the line.

For the E-W lines, column 1 gives the distance from the coastline;

for the N-S lines, column 1 gives the distance from southernmost point.

column 6 (count) gives the number of samples in that 2db bin

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